Service manual

No sound No picture No light
Check if the power cord is correctly connected
Yes
No
Connect the power cord to the socket
Check if there is voltage pressure in J3(12V)ଞ J7(5Vstb)
Replace Remote Control Board
Yes
Replace D806 or D811
Still having problems
Change Mainboard
Check if L801ஂ1.32Vஃଞ L804ஂ1.8VஃଞL808ஂ
3.3VஃଞD800ஂ2.5Vஃis
working
No
Chang U7
Yes
Chang U801 OR U802 OR U803 OR U804
No
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